Home / 212,878-319,348

Finding the Third Proportional to 212,878 and 319,348

Calculator

Solution

The third proportional to 212,878 and 319,348 is: 479,068.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,878 : 319,348 = 319,348 : x
  2. Step 2: Convert to fraction form
    212,878/319,348 = 319,348/x
  3. Step 3: Cross multiply
    212,878x = 319,348 × 319,348
  4. Step 4: Simplify right side
    212,878x = 101,983,145,104
  5. Step 5: Solve for x
    x = 101,983,145,104/212,878
  6. Step 6: Final answer
    x = 479,068.50

Related Problems

Find third proportional to 106,439 and 159,674
Half scale
Find third proportional to 425,756 and 638,696
Double scale
Find third proportional to 212,880 and 319,351
Similar ratio
Find third proportional to 319,317 and 479,022
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.